Optical image capturing system

ABSTRACT

A three-piece optical lens for capturing image and a three-piece optical module for capturing image, along the optical axis in order from an object side to an image side, include a first lens with positive refractive power, wherein an object-side surface thereof can be convex; a second lens with refractive power; and a third lens with refractive power, wherein both surfaces of each of the aforementioned lenses can be aspheric; the third lens can have positive refractive power, wherein an image-side surface thereof can be concave, and both surfaces thereof are aspheric; at least one surface of the third lens has an inflection point whereby the optical lens can increase aperture value and improve the imaging quality for use in compact cameras.

BACKGROUND OF THE INVENTION

1. Technical Field

The present invention relates generally to an optical system, and moreparticularly to a compact optical image capturing system for anelectronic device.

2. Description of Related Art

In recent years, with the rise of portable electronic devices havingcamera functionalities, there has been a steady rise in demand for anoptical image capturing system. The image sensing device of ordinaryphotographing camera is commonly selected from a charge coupled device(CCD) or complementary metal-oxide semiconductor sensor (CMOS Sensor).In addition, as advanced semiconductor manufacturing technology enablesthe minimization of pixel size of the image sensing device, opticalimage capturing systems are developing fields of high pixels. Therefore,there is an increasing need for suitable optical systems providing highimaging quality.

The conventional optical system of the portable electronic deviceusually has a two-piece or three-piece lens. However, the optical systemneeds a larger aperture to take pictures in a dark environment.Conventional large aperture optical systems usually have severalproblems, such as large aberration, poor image quality at periphery ofthe image, and are difficult to manufacture. Moreover, substantialdistortion often accompanies conventional wide-angle optical system.Therefore, conventional optical systems have up to now not provided thehigh level optical performance needed.

In particular, an issue persists relating to a need to increase thequantity of light entering the lens and the angle of field of the lens.In addition, there is a need for modern lens having several improvedproperties, including high pixels, high image quality, small in size,and high optical performance.

BRIEF SUMMARY OF THE INVENTION

The present disclosure is directed to an optical image capturing systemand an optical image capturing lens which employs a combination ofrefractive powers, convex and concave surfaces of four-piece opticallenses (the convex or concave surface in the disclosure denotes thegeometrical shape of an image-side surface or an object-side surface ofeach lens on an optical axis) to increase the quantity of incoming lightof the optical image capturing system, and to improve imaging qualityfor image formation, so as to be applied to compact electronic products.

The term and its definition to the lens parameter in the embodiment ofthe present are shown as below for further reference.

The Lens Parameter Related to a Length or a Height in the Lens:

A height for image formation of the optical image capturing system isdenoted by HOI. A height of the optical image capturing system isdenoted by HOS. A distance from the object-side surface of the firstlens to the image-side surface of the third lens is denoted by InTL. Adistance from the image-side surface of the third lens to the imageplane is denoted by InB. InTL+InB=HOS. A distance from the first lens tothe second lens is denoted by IN12 (instance). A central thickness ofthe first lens of the optical image capturing system on the optical axisis denoted by TP1 (instance).

The Lens Parameter Related to a Material in the Lens:

An Abbe number of the first lens in the optical image capturing systemis denoted by NA1 (instance). A refractive index of the first lens isdenoted by Nd1 (instance).

The Lens Parameter Related to a View Angle in the Lens:

A view angle is denoted by AF. Half of the view angle is denoted by HAF.A major light angle is denoted by MRA.

The Lens Parameter Related to Exit/Entrance Pupil in the Lens

An entrance pupil diameter of the optical image capturing system isdenoted by HEP.

The Lens Parameter Related to a Depth of the Lens Shape

A distance in parallel with an optical axis from a maximum effectivesemi diameter position to an axial point on the object-side surface ofthe third lens is denoted by InRS31 (instance). A distance in parallelwith an optical axis from a maximum effective semi diameter position toan axial point on the image-side surface of the third lens is denoted byInRS32 (instance).

The Lens Parameter Related to the Lens Shape:

A critical point C is a tangent point on a surface of a specific lens,and the tangent point is tangent to a plane perpendicular to the opticalaxis and the tangent point cannot be a crossover point on the opticalaxis. To follow the past, a distance perpendicular to the optical axisbetween a critical point C21 on the object-side surface of the secondlens and the optical axis is HVT21 (instance). A distance perpendicularto the optical axis between a critical point C31 on the object-sidesurface of the third lens and the optical axis is HVT31 (instance). Adistance perpendicular to the optical axis between a critical point C32on the image-side surface of the third lens and the optical axis isHVT32 (instance). The object-side surface of the third lens has oneinflection point IF311 which is nearest to the optical axis, and thesinkage value of the inflection point IF311 is denoted by SGI311. Adistance perpendicular to the optical axis between the inflection pointIF311 and the optical axis is HIF311 (instance). The image-side surfaceof the third lens has one inflection point IF321 which is nearest to theoptical axis, and the sinkage value of the inflection point IF321 isdenoted by SGI321 (instance). A distance perpendicular to the opticalaxis between the inflection point IF321 and the optical axis is HIF321(instance). The object-side surface of the third lens has one inflectionpoint IF312 which is the second nearest to the optical axis, and thesinkage value of the inflection point IF312 is denoted by SGI312(instance). A distance perpendicular to the optical axis between theinflection point IF312 and the optical axis is HIF312 (instance). Theimage-side surface of the third lens has one inflection point IF322which is the second nearest to the optical axis, and the sinkage valueof the inflection point IF322 is denoted by SGI322 (instance). Adistance perpendicular to the optical axis between the inflection pointIF322 and the optical axis is HIF322 (instance).

The Lens Parameter Related to an Aberration:

Optical distortion for image formation in the optical image capturingsystem is denoted by ODT. TV distortion for image formation in theoptical image capturing system is denoted by TDT. Further, the range ofthe aberration offset for the view of image formation may be limited to50%-100% field. An offset of the spherical aberration is denoted by DFS.An offset of the coma aberration is denoted by DFC.

The present invention provides an optical image capturing system, inwhich the third lens is provided with an inflection point at theobject-side surface or at the image-side surface to adjust the incidentangle of each view field and modify the ODT and the TDT. In addition,the surfaces of the third lens are capable of modifying the optical pathto improve the imaging quality.

The optical image capturing system of the present invention includes afirst lens, a second lens, and a third lens, in order along an opticalaxis from an object side to an image side. The first lens has positiverefractive power, and the third lens has refractive power. At least twoof the three lenses each have at least an inflection point on a surfacethereof. Both the object-side surface and the image-side surface of thethird lens are aspheric surfaces. The optical image capturing systemsatisfies:1.2≦f/HEP≦6.0; and 1.0≦HOS/f≦2.0;

where f is a focal length of the optical image capturing system; HEP isan entrance pupil diameter of the optical image capturing system; HOS isa distance in parallel with the optical axis between an object-sidesurface, which face the object side, of the first lens and the imageplane.

The present invention further provides an optical image capturingsystem, including a first lens, a second lens, and a third lens in orderalong an optical axis from an object side to an image side. The firstlens has positive refractive power, and both the object-side surface andthe image side surface thereof are aspheric surfaces. The second lenshas refractive power, and has at least an inflection point on a surfacethereof. The third lens has at least an inflection point on a surfacethereof, and both the object-side surface and the image side surfacethereof are aspheric surfaces. The optical image capturing systemsatisfies:1.2≦f/HEP≦6.0; 0.4≦|tan(HAF)|≦1.0; 1.0≦HOS/f≦2.0; |TDT|<60%; and|ODT|≦50%;

where f is a focal length of the optical image capturing system; HEP isan entrance pupil diameter of the optical image capturing system; HOS isa distance in parallel with the optical axis between an object-sidesurface, which face the object side, of the first lens and the imageplane; HAF is a half of the view angle of the optical image capturingsystem; TDT is a TV distortion; ODT is an optical distortion.

The present invention further provides an optical image capturingsystem, including a first lens, a second lens, and a third lens, inorder along an optical axis from an object side to an image side. Thefirst lens has positive refractive power, a portion of the image-sidesurface closed to the optical axis is convex, and at least one of theobject-side surface and the image side surface has at least aninflection point. The second lens has negative refractive power, and atleast an object-side surface and an image side surface thereof each hasat least an inflection point. The third lens has refractive power, andat least an object-side surface and an image side surface thereof eachhas at least an inflection point. The optical image capturing systemsatisfies:1.2≦f/HEP≦3.0; 0.4≦|tan(HAF)|≦1.0; 1.0≦HOS/f≦2.0; |TDT|<60%; and|ODT|≦50%;

where f is a focal length of the optical image capturing system; HEP isan entrance pupil diameter of the optical image capturing system; HOS isa distance in parallel with the optical axis between an object-sidesurface, which face the object side, of the first lens and the imageplane; HAF is a half of the view angle of the optical image capturingsystem; TDT is a TV distortion; and ODT is an optical distortion.

In an embodiment, the optical image capturing system further includes animage sensor with a size less than 1/1.2″ in diagonal, a preferred sizeis 1/2.3″, and a pixel less than 1.4 μm. A preferable pixel size of theimage sensor is less than 1.12 μm, and more preferable pixel size isless than 0.9 μm. A 16:9 image sensor is available for the optical imagecapturing system of the present invention.

In an embodiment, the optical image capturing system of the presentinvention is available to a million pixels or higher recording, andprovides high quality of image.

In an embodiment, a height of the optical image capturing system (HOS)can be reduced while |f1|>f3.

In an embodiment, when the lenses satisfy |f2|>|f1|, the second lenscould have weak positive refractive power or weak negative refractivepower. When the second lens has weak positive refractive power, it mayshare the positive refractive power of the first lens, and on thecontrary, when the second lens has weak negative refractive power, itmay finely modify the aberration of the system.

In an embodiment, the third lens could have positive refractive power,and an image-side surface thereof is concave, it may reduce back focallength and size. Besides, the third lens could have at least aninflection point on at least a surface thereof, which may reduce anincident angle of the light of an off-axis field of view and modify theaberration of the off-axis field of view. It is preferable that bothsurfaces of the third lens have at least an inflection point on asurface thereof.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

The present invention will be best understood by referring to thefollowing detailed description of some illustrative embodiments inconjunction with the accompanying drawings, in which

FIG. 1A is a schematic diagram of a first preferred embodiment of thepresent invention;

FIG. 1B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the first embodiment of thepresent application;

FIG. 1C shows a curve diagram of TV distortion of the optical imagecapturing system of the first embodiment of the present application;

FIG. 2A is a schematic diagram of a second preferred embodiment of thepresent invention;

FIG. 2B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the second embodiment of thepresent application;

FIG. 2C shows a curve diagram of TV distortion of the optical imagecapturing system of the second embodiment of the present application;

FIG. 3A is a schematic diagram of a third preferred embodiment of thepresent invention;

FIG. 3B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the third embodiment of thepresent application;

FIG. 3C shows a curve diagram of TV distortion of the optical imagecapturing system of the third embodiment of the present application;

FIG. 4A is a schematic diagram of a fourth preferred embodiment of thepresent invention;

FIG. 4B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the fourth embodiment of thepresent application;

FIG. 4C shows a curve diagram of TV distortion of the optical imagecapturing system of the fourth embodiment of the present application;

FIG. 5A is a schematic diagram of a fifth preferred embodiment of thepresent invention;

FIG. 5B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the fifth embodiment of thepresent application; and

FIG. 5C shows a curve diagram of TV distortion of the optical imagecapturing system of the fifth embodiment of the present application.

FIG. 6A is a schematic diagram of a sixth preferred embodiment of thepresent invention;

FIG. 6B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the sixth embodiment of thepresent application; and

FIG. 6C shows a curve diagram of TV distortion of the optical imagecapturing system of the sixth embodiment of the present application.

DETAILED DESCRIPTION OF THE INVENTION

An optical image capturing system of the present invention includes afirst lens, a second lens, and a third lens from an object side to animage side. The optical image capturing system further is provided withan image sensor at an image plane.

The optical image capturing system works in three wavelengths, including486.1 nm, 587.5 nm, and 656.2 nm, wherein 587.5 nm is the main referencewavelength, and 555 nm is the reference wavelength for obtaining thetechnical characters.

The optical image capturing system of the present invention satisfies0.5≦ΣPPR/|ΣNPR|≦4.5, and a preferable range is 1≦ΣPPR/|ΣNPR|≦3.8, wherePPR is a ratio of the focal length f of the optical image capturingsystem to a focal length fp of each of lenses with positive refractivepower; NPR is a ratio of the focal length f of the optical imagecapturing system to a focal length fn of each of lenses with negativerefractive power; ΣPPR is a sum of the PPRs of each positive lens; andΣNPR is a sum of the PNRs of each negative lens. It is helpful forcontrol of an entire refractive power and an entire length of theoptical image capturing system.

HOS is a height of the optical image capturing system, and when theratio of HOS/f approaches to 1, it is helpful for decrease of size andincrease of imaging quality.

In an embodiment, the optical image capturing system of the presentinvention satisfies 0<ΣPP≦200 and f1/ΣPP≦0.85, and a preferable range is0<ΣPP≦150 and 0.01≦f1/ΣPP≦0.6, where ΣPP is a sum of a focal length fpof each lens with positive refractive power, and ΣNP is a sum of a focallength fn of each lens with negative refractive power. It is helpful forcontrol of focusing capacity of the system and redistribution of thepositive refractive powers of the system to avoid the significantaberration in early time.

The first lens has positive refractive power, and an object-sidesurface, which faces the object side, thereof is convex. It may modifythe positive refractive power of the first lens as well as shorten theentire length of the system.

The second lens has negative refractive power, which may correct theaberration of the first lens.

The third lens has positive refractive power, and an image-side surface,which faces the image side, thereof is concave. It may share thepositive refractive power of the first lens and shorten the back focallength to keep the system miniaturized. Besides, the third has at leastan inflection point on at least a surface thereof to reduce the incidentangle of the off-axis view angle light. Preferable, both the object-sidesurface and the image-side surface each has at least an inflectionpoint.

The image sensor is provided on the image plane. The optical imagecapturing system of the present invention satisfies HOS/HOI≦3 and0.5≦HOS/f≦3.0, and a preferable range is 1≦HOS/HOI≦2.5 and 1≦HOS/f≦2,where HOI is height for image formation of the optical image capturingsystem, i.e., the maximum image height, and HOS is a height of theoptical image capturing system, i.e. a distance on the optical axisbetween the object-side surface of the first lens and the image plane.It is helpful for reduction of size of the system for used in compactcameras.

The optical image capturing system of the present invention further isprovided with an aperture to increase image quality.

In the optical image capturing system of the present invention, theaperture could be a front aperture or a middle aperture, wherein thefront aperture is provided between the object and the first lens, andthe middle is provided between the first lens and the image plane. Thefront aperture provides a long distance between an exit pupil of thesystem and the image plane, which allows more elements to be installed.The middle could enlarge a view angle of view of the system and increasethe efficiency of the image sensor. The optical image capturing systemsatisfies 0.5≦InS/HOS≦1.1, and a preferable range is 0.6≦InS/HOS≦1,where InS is a distance between the aperture and the image plane. It ishelpful for size reduction and wide angle.

The optical image capturing system of the present invention satisfies0.45≦ΣTP/InTL≦0.95, where InTL is a distance between the object-sidesurface of the first lens and the image-side surface of the third lens,and ΣTP is a sum of central thicknesses of the lenses on the opticalaxis. It is helpful for the contrast of image and yield rate ofmanufacture, and provides a suitable back focal length for installationof other elements.

The optical image capturing system of the present invention satisfies0.1≦|R1/R2|≦3.0, and a preferable range is 0.1≦|R1/R2|≦2.0, where R1 isa radius of curvature of the object-side surface of the first lens, andR2 is a radius of curvature of the image-side surface of the first lens.It provides the first lens with a suitable positive refractive power toreduce the increase rate of the spherical aberration.

The optical image capturing system of the present invention satisfies−200<(R5−R6)/(R5+R6)<30, where R5 is a radius of curvature of theobject-side surface of the third lens, and R6 is a radius of curvatureof the image-side surface of the third lens. It may modify theastigmatic field curvature.

The optical image capturing system of the present invention satisfies0<IN12/f≦0.30, and a preferable range is 0.01≦IN12/f≦0.25, where IN12 isa distance on the optical axis between the first lens and the secondlens. It may correct chromatic aberration and improve the performance.

The optical image capturing system of the present invention satisfies1≦(TP1+IN12)/TP2≦10, where TP1 is a central thickness of the first lenson the optical axis, and TP2 is a central thickness of the second lenson the optical axis. It may control the sensitivity of manufacture ofthe system and improve the performance.

The optical image capturing system of the present invention satisfies0.2≦(TP3+IN23)/TP2≦10, where TP2 is a central thickness of the secondlens on the optical axis, TP3 is a central thickness of the third lenson the optical axis, and IN23 is a distance between the second lens andthe third lens. It may control the sensitivity of manufacture of thesystem and improve the performance.

The optical image capturing system of the present invention satisfies0.1≦TP2/ΣTP≦0.9, and a preferable range is 0.1≦TP2/ΣTP≦0.3, where TP2 isa central thickness of the second lens on the optical axis and ΣTP is asum of the central thicknesses of all the lenses on the optical axis. Itmay finely modify the aberration of the incident rays and reduce theheight of the system.

The optical image capturing system of the present invention satisfies −1mm≦InRS31≦1 mm; −1 mm≦InRS32≦1 mm; 1 mm≦|InRS31|+|InRS32|≦2 mm;0.01≦|InRS31|/TP3≦10; 0.01≦|InRS32|/TP3≦10, where InRS31 is adisplacement in parallel with the optical axis from a point on theobject-side surface of the third lens, through which the optical axispasses, to a point at the maximum effective semi diameter of theobject-side surface of the third lens, wherein InRS31 is positive whilethe displacement is toward the image side, and InRS31 is negative whilethe displacement is toward the object side; InRS32 is a displacement inparallel with the optical axis from a point on the image-side surface ofthe third lens, through which the optical axis passes, to a point at themaximum effective semi diameter of the image-side surface of the thirdlens; and TP3 is a central thickness of the third lens on the opticalaxis. It may control the positions of the maximum effective semidiameter on both surfaces of the third lens, correct the aberration ofthe peripheral view field, and reduce the size.

The optical image capturing system of the present invention satisfies0<SGI311/(SGI311+TP3)≦0.9; 0<SGI321/(SGI321+TP3)≦0.9, and it ispreferable to satisfy 0.01<SGI311/(SGI311+TP3)≦0.7;0.01<SGI321/(SGI321+TP3)≦0.7, where SGI311 is a displacement in parallelwith the optical axis, from a point on the object-side surface of thethird lens, through which the optical axis passes, to the inflectionpoint on the object-side surface, which is the closest to the opticalaxis, and SGI321 is a displacement in parallel with the optical axis,from a point on the image-side surface of the third lens, through whichthe optical axis passes, to the inflection point on the image-sidesurface, which is the closest to the optical axis.

The optical image capturing system of the present invention satisfies0<SGI312/(SGI312+TP3)≦0.9; 0<SGI322/(SGI322+TP3)≦0.9, and it ispreferable to satisfy 0.1≦SGI312/(SGI312+TP3)≦0.8;0.1≦SGI322/(SGI322+TP3)≦0.8, where SGI312 is a displacement in parallelwith the optical axis, from a point on the object-side surface of thethird lens, through which the optical axis passes, to the inflectionpoint on the object-side surface, which is the second closest to theoptical axis, and SGI322 is a displacement in parallel with the opticalaxis, from a point on the image-side surface of the third lens, throughwhich the optical axis passes, to the inflection point on the image-sidesurface, which is the second closest to the optical axis.

The optical image capturing system of the present invention satisfies0.01≦HIF311/HOI≦0.9; 0.01≦HIF321/HOI≦0.9, and it is preferable tosatisfy 0.09≦HIF311/HOI≦0.5; 0.09≦HIF321/HOI≦0.5, where HIF311 is adistance perpendicular to the optical axis between the inflection pointon the object-side surface of the third lens, which is the closest tothe optical axis, and the optical axis, and HIF321 is a distanceperpendicular to the optical axis between the inflection point on theimage-side surface of the third lens, which is the closest to theoptical axis, and the optical axis.

The optical image capturing system of the present invention satisfies0.01≦HIF312/HOI≦0.9; 0.01≦HIF322/HOI≦0.9, and it is preferable tosatisfy 0.09≦HIF312/HOI≦0.8; 0.09≦HIF322/HOI≦0.8, where HIF312 is adistance perpendicular to the optical axis between the inflection pointon the object-side surface of the third lens, which is the secondclosest to the optical axis, and the optical axis, and HIF322 is adistance perpendicular to the optical axis between the inflection pointon the image-side surface of the third lens, which is the second closestto the optical axis, and the optical axis.

In an embodiment, the lenses of high Abbe number and the lenses of lowAbbe number are arranged in an interlaced arrangement that could behelpful to correction of aberration of the system.

An equation of aspheric surface isz=ch ²/[1+[1(k+1)c ² h ²]^(0.5) ]+A4h ⁴ +A6h ⁶ +A8⁸ +A10h ¹⁰ +A12h ¹²+A14h ¹⁴ +A16h ¹⁶ +A18h ¹⁸ +A20h ²⁰+ . . .  (1)

where z is a depression of the aspheric surface; k is conic constant; cis reciprocal of radius of curvature; and A4, A6, A8, A10, A12, A14,A16, A18, and A20 are high-order aspheric coefficients.

In the optical image capturing system, the lenses could be made ofplastic or glass. The plastic lenses may reduce the weight and lower thecost of the system, and the glass lenses may control the thermal effectand enlarge the space for arrangement of refractive power of the system.In addition, the opposite surfaces (object-side surface and image-sidesurface) of the first to the third lenses could be aspheric that canobtain more control parameters to reduce aberration. The number ofaspheric glass lenses could be less than the conventional sphericalglass lenses that is helpful to reduction of the height of the system.

When the lens has a convex surface, which means that the surface isconvex around a position, through which the optical axis passes, andwhen the lens has a concave surface, which means that the surface isconcave around a position, through which the optical axis passes.

The optical image capturing system of the present invention further isprovided with a diaphragm to increase image quality.

In the optical image capturing system, the diaphragm could be a frontdiaphragm or a middle diaphragm, wherein the front diaphragm is providedbetween the object and the first lens, and the middle is providedbetween the first lens and the image plane. The front diaphragm providesa long distance between an exit pupil of the system and the image plane,which allows more elements to be installed. The middle diaphragm couldenlarge a view angle of view of the system and increase the efficiencyof the image sensor. The middle diaphragm is helpful to size reductionand wide angle.

The optical image capturing system of the present invention could beapplied in dynamic focusing optical system. It is superior in correctionof aberration and high imaging quality so that it could be allied inlots of fields.

We provide several embodiments in conjunction with the accompanyingdrawings for the best understanding, which are:

[First Embodiment]

As shown in FIG. 1A and FIG. 1B, an optical image capturing system 100of the first preferred embodiment of the present invention includes,along an optical axis from an object side to an image side, a first lens110, an aperture 100, a second lens 120, a third lens 130, an infraredrays filter 170, an image plane 180, and an image sensor 190.

The first lens 110 has positive refractive power, and is made ofplastic. An object-side surface 112 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 114thereof, which faces the image side, is a concave aspheric surface.

The second lens 120 has negative refractive power, and is made ofplastic. An object-side surface 122 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 124thereof, which faces the image side, is a convex aspheric surface, andthe image-side surface 124 has an inflection point. The second lens 120satisfies SGI221=−0.1526 mm and |SGI221|/(|SGI221|+TP2)=0.2292, whereSGI221 is a displacement in parallel with the optical axis from a pointon the image-side surface of the second lens, through which the opticalaxis passes, to the inflection point on the image-side surface, which isthe closest to the optical axis.

The second lens further satisfies HIF221=0.5606 mm andHIF221/HOI=0.3128, where HIF221 is a displacement perpendicular to theoptical axis from a point on the image-side surface of the second lens,through which the optical axis passes, to the inflection point, which isthe closest to the optical axis.

The third lens 130 has positive refractive power, and is made ofplastic. An object-side surface 132, which faces the object side, is aconvex aspheric surface, and an image-side surface 134, which faces theimage side, is a concave aspheric surface. The object-side surface 132has two inflection points, and the image-side surface 134 has aninflection point. The third lens 130 satisfies SGI311=0.0180 mm;SGI321=0.0331 mm and |SGI311|/(|SGI311|+TP3)=0.0339 and|SGI321|/(|SGI321|+TP3)=0.0605, where SGI311 is a displacement inparallel with the optical axis, from a point on the object-side surfaceof the third lens, through which the optical axis passes, to theinflection point on the object-side surface, which is the closest to theoptical axis, and SGI321 is a displacement in parallel with the opticalaxis, from a point on the image-side surface of the third lens, throughwhich the optical axis passes, to the inflection point on the image-sidesurface, which is the closest to the optical axis.

The third lens 130 further satisfies SGI312=−0.0367 mm and|SGI312|/(|SGI312|+TP3)=0.0668, where SGI312 is a displacement inparallel with the optical axis, from a point on the object-side surfaceof the third lens, through which the optical axis passes, to theinflection point on the object-side surface, which is the second closestto the optical axis.

The third lens 130 further satisfies HIF311=0.2298 mm; HIF321=0.3393 mm;HIF311/HOI=0.1282; and HIF321/HOI=0.1893, where HIF311 is a distanceperpendicular to the optical axis between the inflection point on theobject-side surface of the third lens, which is the closest to theoptical axis, and the optical axis, and HIF321 is a distanceperpendicular to the optical axis between the inflection point on theimage-side surface of the third lens, which is the closest to theoptical axis, and the optical axis.

The third lens 130 further satisfies HIF312=0.8186 mm andHIF312/HOI=0.4568, where HIF312 is a distance perpendicular to theoptical axis between the inflection point on the object-side surface ofthe third lens, which is the second closest to the optical axis, and theoptical axis.

The infrared rays filter 170 is made of glass, and between the thirdlens 130 and the image plane 180. The infrared rays filter 170 gives nocontribution to the focal length of the system.

The optical image capturing system of the first preferred embodiment hasthe following parameters, which are f=2.42952 mm; f/HEP=2.02; andHAF=35.87 degrees and tan(HAF)=0.7231, where f is a focal length of thesystem; HAF is a half of the maximum field angle; and HEP is an entrancepupil diameter.

The parameters of the lenses of the first preferred embodiment aref=2.27233 mm; |f/f1|=1.06962; f3=−7.0647 mm; |f1|<f3; and|f1/f3|=0.3216, where f1 is a focal length of the first lens 110; and f3is a focal length of the third lens 130.

The first preferred embodiment further satisfies f2=−5.2251 mm and|f2|>|f1|, where f2 is a focal length of the second lens 120 and f3 is afocal length of the third lens 130.

The optical image capturing system of the first preferred embodimentfurther satisfies ΣPPR=f/f1+f/f3=1.4131; ΣNPR=f/f2=0.4650;ΣPPR/|ΣNPR|=3.0391; |f/f3|=0.3439; |f1/f2|=0.4349; and |f2/f3|=0.7396,where PPR is a ratio of a focal length f of the optical image capturingsystem to a focal length fp of each of the lenses with positiverefractive power; and NPR is a ratio of a focal length f of the opticalimage capturing system to a focal length fn of each of lenses withnegative refractive power.

The optical image capturing system of the first preferred embodimentfurther satisfies InTL+InB=HOS; HOS=2.9110 mm; HOI=1.792 mm;HOS/HOI=1.6244; HOS/f=1.1982; InTL/HOS=0.7008; InS=2.25447 mm; andInS/HOS=0.7745, where InTL is a distance between the object-side surface112 of the first lens 110 and the image-side surface 134 of the thirdlens 130; HOS is a height of the image capturing system, i.e. a distancebetween the object-side surface 112 of the first lens 110 and the imageplane 180; InS is a distance between the aperture 100 and the imageplane 180; HOI is height for image formation of the optical imagecapturing system, i.e., the maximum image height; and InB is a distancebetween the image-side surface 134 of the third lens 130 and the imageplane 180.

The optical image capturing system of the first preferred embodimentfurther satisfies ΣTP=1.4198 mm and ΣTP/InTL=0.6959, where ΣTP is a sumof the thicknesses of the lenses 110-130 with refractive power. It ishelpful for the contrast of image and yield rate of manufacture, andprovides a suitable back focal length for installation of otherelements.

The optical image capturing system of the first preferred embodimentfurther satisfies |R1/R2|=0.3849, where R1 is a radius of curvature ofthe object-side surface 112 of the first lens 110, and R2 is a radius ofcurvature of the image-side surface 114 of the first lens 110. Itprovides the first lens with a suitable positive refractive power toreduce the increase rate of the spherical aberration.

The optical image capturing system of the first preferred embodimentfurther satisfies (R5−R6)/(R5+R6)=−0.0899, where R5 is a radius ofcurvature of the object-side surface 132 of the third lens 130, and R6is a radius of curvature of the image-side surface 134 of the third lens130. It may modify the astigmatic field curvature.

The optical image capturing system of the first preferred embodimentfurther satisfies ΣPP=f1+f3=9.3370 mm and f1/(f1+f3)=0.2434, where ΣPPis a sum of the focal lengths fp of each lens with positive refractivepower. It is helpful to share the positive refractive power of the firstlens 110 to the other positive lens to avoid the significant aberrationcaused by the incident rays.

The optical image capturing system of the first preferred embodimentfurther satisfies ΣNP=f2=−5.2251 mm, where f2 is a focal length of thesecond lens 120, and ΣNP is a sum of the focal lengths fn of each lenswith negative refractive power. It is helpful to avoid the significantaberration caused by the incident rays.

The optical image capturing system of the first preferred embodimentfurther satisfies IN12=0.4068 mm and IN12/f=0.1674, where IN12 is adistance on the optical axis between the first lens 110 and the secondlens 120. It may correct chromatic aberration and improve theperformance.

The optical image capturing system of the first preferred embodimentfurther satisfies TP1=0.5132 mm; TP2=0.3363 mm; and(TP1+IN12)/TP2=2.7359, where TP1 is a central thickness of the firstlens 110 on the optical axis, and TP2 is a central thickness of thesecond lens 120 on the optical axis. It may control the sensitivity ofmanufacture of the system and improve the performance.

The optical image capturing system of the first preferred embodimentfurther satisfies (TP3+IN23)/TP2=2.3308, where TP3 is a centralthickness of the third lens 130 on the optical axis, TP2 is a centralthickness of the second lens 120 on the optical axis, and N23 is adistance on the optical axis between the second lens and the third lens.It may control the sensitivity of manufacture of the system and improvethe performance.

The optical image capturing system of the first preferred embodimentfurther satisfies TP2/ΣTP=0.2369, where ΣTP is a sum of the centralthicknesses of all the lenses with refractive power on the optical axis.It may finely modify the aberration of the incident rays and reduce theheight of the system.

The optical image capturing system of the first preferred embodimentfurther satisfies InRS31=−0.1097 mm; InRS32=−0.3195 mm;|InRS31|+|InRS32|=0.42922 mm; |InRS31|/TP3=0.1923; and|InRS32|/TP3=0.5603, where InRS31 is a displacement in parallel with theoptical axis from a point on the object-side surface 132 of the thirdlens, through which the optical axis passes, to a point at the maximumeffective semi diameter of the object-side surface 132 of the thirdlens; InRS32 is a displacement in parallel with the optical axis from apoint on the image-side surface 134 of the third lens, through which theoptical axis passes, to a point at the maximum effective semi diameterof the image-side surface 134 of the third lens; and TP3 is a centralthickness of the third lens 130 on the optical axis. It is helpful formanufacturing and shaping of the lenses, and is helpful to reduce thesize.

The optical image capturing system of the first preferred embodimentsatisfies HVT31=0.4455 mm; HVT32=0.6479 mm; and HVT31/HVT32=0.6876,where HVT31 a distance perpendicular to the optical axis between thecritical point C31 on the object-side surface 132 of the third lens andthe optical axis; and HVT32 a distance perpendicular to the optical axisbetween the critical point C32 on the image-side surface 134 of thethird lens and the optical axis. It is helpful to modify the off-axisview field aberration.

The optical image capturing system of the first preferred embodimentsatisfies HVT32/HOI=0.3616. It is helpful for correction of theaberration of the peripheral view field of the optical image capturingsystem.

The optical image capturing system of the first preferred embodimentsatisfies HVT32/HOS=0.2226. It is helpful for correction of theaberration of the peripheral view field of the optical image capturingsystem.

The second lens 120 and the third lens 130 have negative refractivepower. The optical image capturing system of the first preferredembodiment further satisfies |NA1−NA2|=33.5951; NA3/NA2=2.4969, whereNA1 is an Abbe number of the first lens 110; NA2 is an Abbe number ofthe second lens 120; and NA3 is an Abbe number of the third lens 130. Itmay correct the aberration of the optical image capturing system.

The optical image capturing system of the first preferred embodimentfurther satisfies |TDT|=1.2939% and |ODT|=1.4381%, where TDT is TVdistortion; and ODT is optical distortion.

The parameters of the lenses of the first embodiment are listed in Table1 and Table 2.

TABLE 1 f = 2.42952 mm; f/HEP = 2.02; HAF = 35.87 deg; tan(HAF) = 0.7231Radius of curvature Thickness Refractive Abbe Focal length Surface (mm)(mm) Material index number (mm) 0 Object plane 600 plastic 1 1^(st) lens0.849 0.513 plastic 1.535 56.070 2.273 2 2.205 0.143 3 Aperture plane0.263 4 2^(nd) lens −1.208  0.336 plastic 1.643 22.470 −5.225 5 −2.085 0.214 6 3^(rd) lens 1.178 0.570 plastic 1.544 56.090 7.012 7 1.411 0.1148 Filter plane 0.210 BK7_SCHOTT 9 plane 0.550 10 Image plane plane 0.000Reference wavelength: 555 nm; Position of blocking light: blocking atthe first surface with effective semi diameter of 0.640 mm.

TABLE 2 Coefficients of the aspheric surfaces Surface 1 2 4 5 6 7 k1.22106E−01 1.45448E+01 8.53809E−01 4.48992E−01 −1.44104E+01−3.61090E+00 A4 −6.43320E−04  −9.87186E−02  −7.81909E−01  −1.69310E+00 −7.90920E−01 −5.19895E−01 A6 −2.58026E−02  2.63247E+00 −8.49939E−01 5.85139E+00  4.98290E−01  4.24519E−01 A8 1.00186E+00 −5.88099E+01 3.03407E+01 −1.67037E+01   2.93540E−01 −3.12444E−01 A10 −4.23805E+00 5.75648E+02 −3.11976E+02  2.77661E+01 −3.15288E−01  1.42703E−01 A129.91922E+00 −3.00096E+03  1.45641E+03 −5.46620E+00  −9.66930E−02−2.76209E−02 A14 −1.17917E+01  7.91934E+03 −2.89774E+03  −2.59816E+01  1.67006E−01 −3.11872E−03 A16 8.87410E+00 −8.51578E+03  1.35594E+031.43091E+01 −4.43712E−02  1.34499E−03 A18 0.00000E+00 0.00000E+000.00000E+00 0.00000E+00  0.00000E+00  0.00000E+00 A20 0.00000E+000.00000E+00 0.00000E+00 0.00000E+00  0.00000E+00  0.00000E+00

The detail parameters of the first preferred embodiment are listed inTable 1, in which the unit of radius of curvature, thickness, and focallength are millimeter, and surface 0-10 indicates the surfaces of allelements in the system in sequence from the object side to the imageside. Table 2 is the list of coefficients of the aspheric surfaces, inwhich A1-A20 indicate the coefficients of aspheric surfaces from thefirst order to the twentieth order of each aspheric surface. Thefollowing embodiments have the similar diagrams and tables, which arethe same as those of the first embodiment, so we do not describe itagain.

[Second Embodiment]

As shown in FIG. 2A and FIG. 2B, an optical image capturing system ofthe second preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, an aperture 200, afirst lens 210, a second lens 220, a third lens 230, an infrared raysfilter 270, an image plane 280, and an image sensor 290.

The first lens 210 has positive refractive power, and is made ofplastic. An object-side surface 212 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 214thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 212 has an inflection point.

The second lens 220 has negative refractive power, and is made ofplastic. An object-side surface 222 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 224thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 222 has two inflection points, and the image-sidesurface 224 has an inflection point.

The third lens 230 has positive refractive power, and is made ofplastic. An object-side surface 232, which faces the object side, is aconvex aspheric surface, and an image-side surface 234, which faces theimage side, is a concave aspheric surface. The object-side surface 232and the image-side surface 234 each has an inflection point.

The infrared rays filter 270 is made of glass, and between the thirdlens 230 and the image plane 280. The infrared rays filter 270 gives nocontribution to the focal length of the system.

The optical image capturing system of the second preferred embodimenthas the following parameters, which are |f2|=2.090 mm; and |f1|=2.090mm, where f1 is a focal length of the first lens 210 and f2 is a focallength of the second lens 220.

The optical image capturing system of the second preferred embodimentfurther satisfies TP2=0.235 mm and TP3=1.136 mm, where TP2 is athickness of the second lens 220 on the optical axis, and TP3 is athickness of the third lens 230 on the optical axis.

In the second embodiment, the first and the third lenses 210 and 230 arepositive lenses, and their focal lengths are f1 and f3. The opticalimage capturing system of the second preferred embodiment furthersatisfies ΣPP=f1+f3=4.9390 mm and f1/(f1+f3)=0.4231, where ΣPP is a sumof the focal lengths of each positive lens. It is helpful to share thepositive refractive power of the first lens 210 to the other positivelens to avoid the significant aberration caused by the incident rays.

The optical image capturing system of the second preferred embodimentfurther satisfies ΣNP=f2, where f2 is a focal length of the second lens220, and ΣNP is a sum of the focal lengths of each negative lens.

The parameters of the lenses of the second embodiment are listed inTable 3 and Table 4.

TABLE 3 f = 2.657 mm; f/HEP = 2.0; HAF = 40.045 deg; tan(HAF) = 0.8404Radius of curvature Thickness Refractive Abbe Focal length Surface (mm)(mm) Material index number (mm) 0 Object plane 3000 1 Aperture plane0.09475 2 1^(st) lens 2.34707 1.06670 plastic 1.544 56.09 2.090 3−1.86351 0.45007 4 2^(nd) lens −0.39266 0.23506 plastic 1.642 22.46−2.090 5 −0.68328 0.02500 6 3^(rd) lens 1.15823 1.13559 plastic 1.54456.09 2.849 7 2.96620 0.16168 8 Filter plane 0.20000 BK7 SCHOTT 1.51764.13 1E+18 9 plane 0.70002 10 Image plane plane Reference wavelength:555 nm

TABLE 4 Coefficients of the aspheric surfaces Surface 2 3 4 5 6 7 k−2.106492E+00 4.299803E−01 −1.598743E+00 −2.757916E+00 −3.519144E−01−2.964500E+00 A4 −6.754296E−02 −1.508778E−01   1.275702E+00 1.140281E−01 −8.446172E−01 −8.658138E−02 A6  6.294665E−02 3.752543E−01−7.907872E+00 −9.716749E−01  1.348178E+00  9.974273E−02 A8 −2.047452E−01−3.629590E+00   2.819797E+01  2.946014E+00 −1.681777E+00 −1.529451E−01A10 −8.475698E−01 1.357648E+01 −5.467939E+01 −2.139090E+00  6.609410E−01 1.319258E−01 A12  3.189158E+00 −2.510172E+01   6.205611E+01−1.138760E+00  1.163367E+00 −6.499334E−02 A14 −4.412462E+00 2.500327E+01−4.132986E+01  2.126069E+00 −1.849423E+00  1.814197E−02 A16 2.186575E+00 −1.288695E+01   1.500260E+01 −7.837237E−01  1.043454E+00−2.664658E−03 A18  0.000000E+00 2.694394E+00 −2.297431E+00  3.570174E−02−2.187935E−01  1.581428E−04 A20

An equation of the aspheric surfaces of the second embodiment is thesame as that of the first embodiment, and the definitions are the sameas well.

The exact parameters of the second embodiment based on Table 3 and Table4 are listed in the following table:

Second embodiment (Reference wavelength: 555 nm) InRS31 InRS32 HVT31HVT32 |ODT| % |TDT| % 0.01642 −0.23919  0.91569 1.19027 1.57061 0.29809|f/f1| |f/f2| |f/f3| |f1/f3| |f1/f2| |f2/f3| 1.27139 1.27136 0.932591.36329 1.00002 1.36326 ΣPPR ΣNPR ΣPPR/|ΣNPR| ΣPP ΣNP f1/ΣPP 2.203981.27136 1.73356 4.93904 −2.08995  0.42314 InTL HOS HOS/HOI InS/HOSInTL/HOS ΣTP/InTL 3.97413 2.91242 1.75226 1.02384 0.73284 0.83688|InRS31|/TP3 |InRS32|/TP3 HVT32/HOI HVT32/HOS 0.0145  0.2106  0.5248 0.2995  IN12/f (TP1 + IN12)/TP2 (TP3 + IN23)/TP2 TP2/ΣTP 0.16938 4.937344.93734 0.09644

The results of the equations of the second embodiment based on Table 3and Table 4 are listed in the following table:

Values related to the inflection points of the second embodiment HIF1110.5296 HIF111/HOI 0.2335 SGI111 0.0533 |SGI111|/(|SGI111| + TP1) 0.0476HIF211 0.5101 HIF211/HOI 0.2249 SGI211 −0.2468 |SGI211|/(|SGI211| + TP2)0.5121 HIF212 0.5690 HIF212/HOI 0.2509 SGI212 −0.1911|SGI212|/(|SGI212| + TP2) 0.4484 HIF221 0.5368 HIF221/HOI 0.2367 SGI221−0.1706 |SGI221|/(|SGI221| + TP2) 0.4205 HIF311 0.4288 HIF311/HOI 0.1891SGI311 0.0593 |SGI311|/(|SGI311| + TP3) 0.0496 HIF321 0.6745 HIF321/HOI0.2974 SGI321 0.0618 |SGI321|/(|SGI321| + TP3) 0.0516 (Referencewavelength: 555 nm)

[Third Embodiment]

As shown in FIG. 3A and FIG. 3B, an optical image capturing system ofthe third preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, an aperture 300, afirst lens 310, a second lens 320, a third lens 330, an infrared raysfilter 370, an image plane 380, and an image sensor 390.

The first lens 310 has positive refractive power, and is made ofplastic. An object-side surface 312 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 314thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 312 has two inflection points, and the image-sidesurface 314 has an inflection point.

The second lens 320 has negative refractive power, and is made ofplastic. An object-side surface 322 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 324thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 322 and the image-side surface 324 each has aninflection point.

The third lens 330 has positive refractive power, and is made ofplastic. An object-side surface 332 thereof, which faces the objectside, is a convex surface, and an image-side surface 334 thereof, whichfaces the image side, is a concave aspheric surface. The object-sidesurface 332 and the image-side surface 334 each has an inflection point.

The infrared rays filter 370 is made of glass, and between the thirdlens 330 and the image plane 380. The infrared rays filter 370 gives nocontribution to the focal length of the system.

The parameters of the lenses of the third preferred embodiment are|f2|=1.360 mm; |f1|=1.801; and |f2|>|f1|, where f1 is a focal length ofthe first lens 310 and f2 is a focal length of the second lens 320.

The optical image capturing system of the third preferred embodimentfurther satisfies TP2=0.302 mm and TP3=0.801 mm, where TP2 is athickness of the second lens 320 on the optical axis, and TP3 is athickness of the third lens 330 on the optical axis.

In the third embodiment, the first and the third lenses 310 and 330 arepositive lenses, and their focal lengths are f1 and f3. The opticalimage capturing system of the third preferred embodiment furthersatisfies ΣPP=f1+f3=3.5573 mm and f1/(f1+f3)=0.5063, where ΣPP is a sumof the focal lengths of each positive lens. It is helpful to share thepositive refractive power of the first lens 310 to the other positivelens to avoid the significant aberration caused by the incident rays.

The optical image capturing system of the third preferred embodimentfurther satisfies ΣNP=f2, where f2 is a focal length of the second lens320 and ΣNP is a sum of the focal lengths of each negative lens.

The parameters of the lenses of the third embodiment are listed in Table5 and Table 6.

TABLE 5 f = 2.334 mm; f/HEP = 2.2; HAF = 43.709 deg; tan(HAF) = 0.9559Radius of curvature Thickness Refractive Abbe Focal length Surface (mm)(mm) Material index number (mm) 0 Object plane 3000 1 Aperture plane0.17400 2 1^(st) lens 2.62829 1.18541 plastic 1.544 56.09 1.801 3−1.32067 0.29530 4 2^(nd) lens −0.38598 0.30213 plastic 1.642 22.46−1.360 5 −0.90048 0.02500 6 3^(rd) lens 0.76781 0.80068 plastic 1.54456.09 1.756 7 2.39353 0.34144 8 Filter plane 0.20000 BK7 SCHOTT 1.51764.13 9 plane 0.69999 10 Image plane plane Reference wavelength: 555 nm;Position of blocking light: blocking at the third surface with effectivesemi diameter of 1.020 mm.

TABLE 6 Coefficients of the aspheric surfaces Surface 2 3 4 5 6 7 k 1.024759E+01 3.567079E−01 −1.491497E+00 −1.775305E+00 −8.350400E−01−2.267443E+00 A4 −1.280546E−01 −9.319085E−02   1.820702E+00 5.253725E−01 −9.675407E−01  2.091951E−01 A6  9.467717E−03 2.309620E−01−1.199753E+01 −2.919092E+00  1.918662E+00 −4.130526E−01 A8 −4.261095E+00−3.275766E+00   3.979768E+01  7.249933E+00 −3.852979E+00  3.716409E−01A10  4.417753E+01 1.170771E+01 −7.440558E+01 −9.089286E+00  5.764643E+00−2.283576E−01 A12 −2.519031E+02 −1.502221E+01   8.633305E+01 6.545723E+00 −6.113262E+00  1.044534E−01 A14  8.250892E+02 8.182570E−01−6.541477E+01 −2.802976E+00  4.408212E+00 −3.568654E−02 A16−1.571058E+03 1.590391E+01  3.275345E+01  7.082484E−01 −2.041904E+00 8.401488E−03 A18  1.609130E+03 −1.447012E+01  −1.014303E+01−1.068832E−01  5.452151E−01 −1.172820E−03 A20 −6.861220E+02 4.151954E+00 1.481344E+00  1.102863E−02 −6.364843E−02  7.109691E−05

An equation of the aspheric surfaces of the third embodiment is the sameas that of the first embodiment, and the definitions are the same aswell.

The exact parameters of the third embodiment based on Table 5 and Table6 are listed in the following table:

Third embodiment (Reference wavelength: 555 nm) InRS31 InRS32 HVT31HVT32 |ODT| % |TDT| % 0.24840 0.15923 1.16693 1.44112 1.72870 0.31079|f/f1| |f/f2| |f/f3| |f1/f3| |f1/f2| |f2/f3| 1.29560 1.71592 1.328840.97498 0.75504 1.29129 ΣPPR ΣNPR ΣPPR/|ΣNPR| ΣPP ΣNP f1/ΣPP 2.624431.71592 1.52946 3.55730 −1.35997  0.50633 InTL HOS HOS/HOI InS/HOSInTL/HOS ΣTP/InTL 3.84996 2.60853 1.69751 1.04520 0.67755 0.87721|InRS31|/TP3 |InRS32|/TP3 HVT32/HOI HVT32/HOS 0.3102  0.1989  0.6354 0.3743  IN12/f (TP1 + IN12)/TP2 (TP3 + IN23)/TP2 TP2/ΣTP 0.12654 2.732852.73285 0.13204

The results of the equations of the third embodiment based on Table 5and Table 6 are listed in the following table:

Values related to the inflection points of the third embodiment HIF1110.4895 HIF111/HOI 0.2158 SGI111 0.0412 |SGI111|/(|SGI111| + TP1) 0.0336HIF112 0.4812 HIF112/HOI 0.2122 SGI112 0.0566 |SGI112|/(|SGI112| + TP1)0.0456 HIF121 0.9916 HIF121/HOI 0.4372 SGI121 −0.5506|SGI121|/(|SGI121| + TP1) 0.3171 HIF211 0.5749 HIF211/HOI 0.2535 SGI211−0.3144 |SGI211|/(|SGI211| + TP2) 0.5099 HIF221 0.6469 HIF221/HOI 0.2852SGI221 −0.1996 |SGI221|/(|SGI221| + TP2) 0.3979 HIF311 0.5911 HIF311/HOI0.2606 SGI311 0.1610 |SGI311|/(|SGI311| + TP3) 0.1674 HIF321 0.7971HIF321/HOI 0.3515 SGI321 0.1494 |SGI321|/(|SGI321| + TP3) 0.1572(Reference wavelength: 555 nm)

[Fourth Embodiment]

As shown in FIG. 4A and FIG. 4B, an optical image capturing system ofthe fourth preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, an aperture 400, afirst lens 410, a second lens 420, a third lens 430, an infrared raysfilter 470, an image plane 480, and an image sensor 490.

The first lens 410 has positive refractive power, and is made ofplastic. An object-side surface 412 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 414thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 412 and the image-side surface 414 both have aninflection point.

The second lens 420 has negative refractive power, and is made ofplastic. An object-side surface 422 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 424thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 422 and the image-side surface 424 each has aninflection point.

The third lens 430 has positive refractive power, and is made ofplastic. An object-side surface 432 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 434thereof, which faces the image side, is a concave aspheric surface. Theobject-side surface 432 and the image-side surface 434 each has aninflection point.

The infrared rays filter 470 is made of glass, and between the thirdlens 430 and the image plane 480. The infrared rays filter 470 gives nocontribution to the focal length of the system.

The optical image capturing system of the fourth preferred embodimenthas the following parameters, which are |f2|=1.360 mm; |f|=1.801 mm; and|f2|>|f|, where f1 is a focal length of the first lens 410 and f2 is afocal length of the second lens 420.

The optical image capturing system of the fourth preferred embodimentfurther satisfies TP2=0.302 mm and TP3=0.801 mm, where TP2 is athickness of the second lens 420 on the optical axis, and TP3 is athickness of the third lens 430 on the optical axis.

In the fourth embodiment, the first and the third lenses 410 and 430 arepositive lenses, and their focal lengths are f1 and f3. The opticalimage capturing system of the fourth preferred embodiment furthersatisfies ΣPP=f1+f3=3.5573 mm and f1/(f1+f3)=0.5063, where ΣPP is a sumof the focal lengths of each positive lens. It is helpful to share thepositive refractive power of the first lens 410 to the other positivelens to avoid the significant aberration caused by the incident rays.

The optical image capturing system of the fourth preferred embodimentfurther satisfies ΣNP=f2, where f2 is a focal length of the second lens420, and ΣNP is a sum of the focal lengths of each negative lens.

The parameters of the lenses of the fourth embodiment are listed inTable 7 and Table 8.

TABLE 7 f = 2.334 mm; f/HEP = 2.2; HAF = 43.709 deg; tan(HAF) = 0.9559Radius of curvature Thickness Refractive Abbe Focal length Surface (mm)(mm) Material index number (mm) 0 Object plane 3000 1 Aperture plane0.17400 2 1^(st) lens 2.62829 1.18541 plastic 1.544 56.09 1.801 3−1.32067 0.29530 4 2^(nd) lens −0.38598 0.30213 plastic 1.642 22.46−1.360 5 −0.90048 0.02500 6 3^(rd) lens 0.76781 0.80068 plastic 1.54456.09 1.756 7 2.39353 0.34144 8 Filter 0.20000 BK7 SCHOTT 1.517 64.13 9plane 0.69999 10 Image plane plane Reference wavelength: 555 nm;Position of blocking light: blocking at the third surface with effectivesemi diameter of 1.020 mm.

TABLE 8 Coefficients of the aspheric surfaces Surface 2 3 4 5 6 7 k 1.024759E+01 3.567079E−01 −1.491497E+00 −1.775305E+00 −8.350400E−01−2.267443E+00 A4 −1.280546E−01 −9.319085E−02   1.820702E+00 5.253725E−01 −9.675407E−01  2.091951E−01 A6  9.467717E−03 2.309620E−01−1.199753E+01 −2.919092E+00  1.918662E+00 −4.130526E−01 A8 −4.261095E+00−3.275766E+00   3.979768E+01  7.249933E+00 −3.852979E+00  3.716409E−01A10  4.417753E+01 1.170771E+01 −7.440558E+01 −9.089286E+00  5.764643E+00−2.283576E−01 A12 −2.519031E+02 −1.502221E+01   8.633305E+01 6.545723E+00 −6.113262E+00  1.044534E−01 A14  8.250892E+02 8.182570E−01−6.541477E+01 −2.802976E+00  4.408212E+00 −3.568654E−02 A16−1.571058E+03 1.590391E+01  3.275345E+01  7.082484E−01 −2.041904E+00 8.401488E−03 A18  1.609130E+03 −1.447012E+01  −1.014303E+01−1.068832E−01  5.452151E−01 −1.172820E−03 A20 −6.861220E+02 4.151954E+00 1.481344E+00  1.102863E−02 −6.364843E−02  7.109691E−05

An equation of the aspheric surfaces of the fourth embodiment is thesame as that of the first embodiment, and the definitions are the sameas well.

The exact parameters of the fourth embodiment based on Table 7 and Table8 are listed in the following table:

Fourth embodiment (Reference wavelength: 555 nm) InRS31 InRS32 HVT31HVT32 |ODT| % |TDT| % 0.24840 0.15923 1.16693 1.44112 1.72870 0.31079|f/f1| |f/f2| |f/f3| |f1/f3| |f1/f2| |f2/f3| 1.29560 1.71592 1.328840.97498 0.75504 1.29129 ΣPPR ΣNPR ΣPPR/|ΣNPR| ΣPP ΣNP f1/ΣPP 2.624431.71592 1.52946 3.55730 −1.35997  0.50633 InTL HOS HOS/HOI InS/HOSInTL/HOS ΣTP/InTL 3.84996 2.60853 1.69751 1.04520 0.67755 0.87721|InRS31|/TP3 |InRS32|/TP3 HVT32/HOI HVT32/HOS 0.3102  0.1989  0.6354 0.3743  IN12/f (TP1 + IN12)/TP2 (TP3 + IN23)/TP2 TP2/ΣTP 0.12654 2.732852.73285 0.13204

The results of the equations of the fourth embodiment based on Table 7and Table 8 are listed in the following table:

Values related to the inflection points of the fourth embodiment HIF1110.489487 HIF111/HOI 0.215823 SGI111 0.041246 |SGI111|/(|SGI111| + TP1)0.033625 HIF121 0.991606 HIF121/HOI 0.437216 SGI121 −0.550552|SGI121|/(|SGI121| + TP1) 0.317145 HIF211 0.574894 HIF211/HOI 0.253481SGI211 −0.31436 |SGI211|/(|SGI211| + TP2) 0.509917 HIF221 0.6469HIF221/HOI 0.2852 SGI221 −0.19963 |SGI221|/(|SGI221| + TP2) 0.397852HIF311 0.5911 HIF311/HOI 0.2606 SGI311 0.160967 |SGI311|/(|SGI311| +TP3) 0.167386 HIF321 0.7971 HIF321/HOI 0.3515 SGI321 0.149382|SGI321|/(|SGI321| + TP3) 0.157233 (Reference wavelength: 555 nm)

[Fifth Embodiment]

As shown in FIG. 5A and FIG. 5B, an optical image capturing system ofthe fifth preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, an aperture 500, afirst lens 510, a second lens 520, a third lens 530, an infrared raysfilter 570, an image plane 580, and an image sensor 590.

The first lens 510 has positive refractive power, and is made ofplastic. An object-side surface 512, which faces the object side, is aconvex aspheric surface, and an image-side surface 514, which faces theimage side, is a concave aspheric surface.

The second lens 520 has positive refractive power, and is made ofplastic. An object-side surface 522 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 524thereof, which faces the image side, is a convex aspheric surface. Theimage-side surface 524 has two inflection points.

The third lens 530 has negative refractive power, and is made ofplastic. An object-side surface 532, which faces the object side, is aconvex aspheric surface, and an image-side surface 534, which faces theimage side, is a concave aspheric surface. The object-side surface 532has three inflection points, and the image-side surface 534 has aninflection point.

The infrared rays filter 570 is made of glass, and between the thirdlens 530 and the image plane 580. The infrared rays filter 570 gives nocontribution to the focal length of the system.

The parameters of the lenses of the fifth preferred embodiment are|f2|=1.387 mm; |f1|=1.452 mm; and |f2|<|f1|, where f1 is a focal lengthof the first lens 510 and f2 is a focal length of the second lens 520.

The optical image capturing system of the fifth preferred embodimentfurther satisfies TP2=0.242 mm and TP3=0.294 mm, where TP2 is athickness of the second lens 520 on the optical axis, and TP3 is athickness of the third lens 530 on the optical axis.

In the fifth embodiment, the first and the second lenses 510 and 520 arepositive lenses, and their focal lengths are f1 and f2. The opticalimage capturing system of the fifth preferred embodiment furthersatisfies ΣPP=f1+f2=2.83947 mm and f1/(f1+f2)=0.51149, where f1 is afocal length of the first lens 510, f2 is a focal length of the secondlens 520, and ΣPP is a sum of the focal lengths of each positive lens.It is helpful to share the positive refractive power of the first lens510 to the other positive lens to avoid the significant aberrationcaused by the incident rays.

The optical image capturing system of the fifth preferred embodimentfurther satisfies ΣNP=f3, where ΣNP is a sum of the focal lengths ofeach negative lens.

The parameters of the lenses of the fifth embodiment are listed in Table9 and Table 10.

TABLE 9 f = 1.340 mm; f/HEP = 2.46; HAF = 38.834 deg; tan(HAF) = 0.8050Radius of curvature Thickness Refractive Abbe Focal length Surface (mm)(mm) Material index number (mm) 0 Object plane 600 1 plane 0.102 2Aperture plane −0.08312 3 1^(st) lens 0.49281 0.29050 plastic 1.53556.05 1.452 4 1.06545 0.21304 5 2^(nd) lens −0.96594 0.24240 plastic1.535 56.05 1.387 6 −0.45709 0.03527 7 3^(rd) lens 16.05009 0.29395plastic 1.535 56.05 −1.254 8 0.64146 0.10900 9 Filter plane 0.21 10plane 0.237 11 Image plane plane 0 Reference wavelength: 555 nm

TABLE 10 Coefficients of the aspheric surfaces Surface 3 4 5 6 7 8 k2.01824E−02 9.55965E+00 −4.41020E+01 −1.23809E+01 −1.53530E+04−6.45641E+00 A4 2.73779E−01 9.36063E−01 −3.97557E+00 −9.99887E+00−2.47339E+00 −2.76537E+00 A6 −1.74068E+01  6.83878E+00  2.79159E+01 1.81093E+02  1.54556E+01  1.48443E+01 A8 1.22816E+03 −9.31427E+02  1.39349E+03 −2.00026E+03 −5.09297E+01 −6.18536E+01 A10 −3.35987E+04 3.32362E+04 −5.27979E+04  1.50954E+04  1.29379E+02  1.67430E+02 A124.95528E+05 −5.79704E+05   7.72144E+05 −7.06870E+04 −2.55156E+02−2.67187E+02 A14 −3.90842E+06  4.95867E+06 −5.01063E+06  1.84693E+05 2.71245E+02  1.81948E+02 A16 1.30544E+07 −1.63270E+07   3.64087E+06−2.22351E+05 −6.02299E+01  9.99102E+01 A18 0.00000E+00 0.00000E+00 1.14092E+08  3.64341E+04 −6.24963E+01 −2.46729E+02 A20 0.00000E+000.00000E+00 −4.19185E+08  8.63213E+04 −2.79496E+00  1.15666E+02

An equation of the aspheric surfaces of the fifth embodiment is the sameas that of the first embodiment, and the definitions are the same aswell.

The exact parameters of the fifth embodiment based on Table 9 and Table10 are listed in the following table:

Fifth embodiment (Reference wavelength: 555 nm) InRS31 InRS32 HVT31HVT32 |ODT| % |TDT| % −0.03679  −0.04875  0.07573 0.45922 0.813600.57628 |f/f1| |f/f2| |f/f3| |f1/f3| |f1/f2| |f2/f3| 0.92259 0.966001.06842 0.86351 0.95506 0.90414 ΣPPR ΣNPR ΣPPR/|ΣNPR| (TP1 + IN12)/TP2(TP3 + IN23)/TP2 TP2/ΣTP 1.88859 1.06842 1.76764 1.35819 1.35819 0.29316ΣPP ΣNP f1/ΣPP IN12/f 2.83947 −1.2541  0.51149 0.15899 InTL HOS HOS/HOIInS/HOS InTL/HOS ΣTP/InTL 1.63116 1.07516 1.50754 0.94904 0.659140.76905 |InRS31|/TP3 |InRS32|/TP3 HVT32/HOI HVT32/HOS 0.12516 0.165860.42441 0.28153

The results of the equations of the fifth embodiment based on Table 9and Table 10 are listed in the following table:

Values related to the inflection points of the fifth embodiment HIF2210.261825 HIF221/HOI 0.241982 SGI221 −0.0633236 |SGI221|/(|SGI221| + TP2)0.20713 HIF222 0.415454 HIF222/HOI 0.383969 SGI222 −0.113198|SGI222|/(|SGI222| + TP2) 0.318336 HIF311 0.04297 HIF311/HOI 0.039713SGI311 0.000048 |SGI311|/(|SGI311| + TP3) 0.000163 HIF312 0.358423HIF312/HOI 0.33126 SGI312 −0.0163614 |SGI312|/(|SGI312| + TP3) 0.052725HIF313 0.538607 HIF313/HOI 0.497788 SGI313 −0.0314042|SGI313|/(|SGI313| + TP3) 0.096522 HIF321 0.202546 HIF321/HOI 0.187196SGI321 0.0247325 |SGI321|/(|SGI321| + TP3) 0.077608 (Referencewavelength: 555 nm)

[Sixth Embodiment]

As shown in FIG. 6A and FIG. 6B, an optical image capturing system ofthe sixth preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, an aperture 600, afirst lens 610, a second lens 620, a third lens 630, an infrared raysfilter 670, an image plane 680, and an image sensor 690.

The first lens 610 has positive refractive power, and is made ofplastic. An object-side surface 612, which faces the object side, is aconvex aspheric surface, and an image-side surface 614, which faces theimage side, is a convex aspheric surface. The object-side surface 612has an inflection point.

The second lens 620 has negative refractive power, and is made ofplastic. An object-side surface 622 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 624thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 622 and the image-side surface 624 each has aninflection point.

The third lens 630 has positive refractive power, and is made ofplastic. An object-side surface 632, which faces the object side, is aconvex aspheric surface, and an image-side surface 634, which faces theimage side, is a concave aspheric surface. The object-side surface 632and the image-side surface 634 each has an inflection point.

The infrared rays filter 670 is made of glass, and between the thirdlens 630 and the image plane 680. The infrared rays filter 670 gives nocontribution to the focal length of the system.

The parameters of the lenses of the sixth preferred embodiment are|f2|=1.706 mm; |f1|=1.791 mm; and |f2|<|f1|, where f1 is a focal lengthof the first lens 610 and f2 is a focal length of the second lens 620.

The optical image capturing system of the sixth preferred embodimentfurther satisfies TP2=0.338 mm and TP3=0.646 mm, where TP2 is athickness of the second lens 620 on the optical axis, and TP3 is athickness of the third lens 630 on the optical axis.

In the sixth embodiment, the first and the third lenses 610 and 630 arepositive lenses, and their focal lengths are f1 and f3. The opticalimage capturing system of the sixth preferred embodiment furthersatisfies ΣPP=f1+f3=4.0907 mm and f1/(f1+f3)=0.4377, where f1 is a focallength of the first lens 610, f3 is a focal length of the third lens630, and ΣPP is a sum of the focal lengths of each positive lens. It ishelpful to share the positive refractive power of the first lens 610 tothe other positive lens to avoid the significant aberration caused bythe incident rays.

The optical image capturing system of the sixth preferred embodimentfurther satisfies ΣNP=f3, where ΣNP is a sum of the focal lengths ofeach negative lens.

The parameters of the lenses of the sixth embodiment are listed in Table11 and Table 12.

TABLE 11 f = 2.334 mm; f/HEP = 1.8; HAF = 43.934 deg; tan(HAF) = 0.9635Radius of curvature Thickness Refractive Abbe Focal length Surface (mm)(mm) Material index number (mm) 0 Object plane 6000 1 Aperture plane0.245 2 1^(st) lens 2.273980 1.187 plastic 1.544 56.09 1.791 3 −1.3983000.234 4 2^(nd) lens −0.424004 0.338 plastic 1.642 22.46 −1.706 5−0.903506 0.025 6 3^(rd) lens 0.863493 0.646 plastic 1.642 22.46 2.300 71.450258 0.326 8 Filter plane 0.300 1.517 64.13 9 plane 0.700 10 Imageplane plane Reference wavelength: 555 nm; Position of blocking light:blocking at the third surface with effective semi diameter of 0.980 mm

TABLE 12 Coefficients of the aspheric surfaces Surface 2 3 4 5 6 7 k−5.793298E+01  −1.047222E+01 −2.214799E+00 −1.609407E+00  −1.279016E+00−5.974452E+00 A4 5.680888E−01 −3.906179E−01  7.450205E−01 3.279455E−01−7.661874E−01  7.677749E−02 A6 −2.795876E+00  −2.002429E−01−6.574821E+00 −8.799316E−01   1.625831E+00 −1.684057E−01 A8 1.063340E+01−6.185052E−01  2.106066E+01 4.139075E−01 −2.860513E+00  1.039362E−01 A10−2.849055E+01   4.623426E+00 −3.528569E+01 3.660140E+00  3.247167E+00−1.815849E−02 A12 4.688333E+01 −7.602169E+00  3.509519E+01−8.188023E+00  −2.233218E+00 −1.486964E−02 A14 −4.319063E+01  5.161391E+00 −2.125517E+01 7.720120E+00  8.403317E−01  9.981753E−03 A161.663827E+01 −1.295352E+00  7.457267E+00 −3.562241E+00  −1.320160E−01−2.377427E−03 A18 0.000000E+00  0.000000E+00 −1.193774E+00 6.639228E−01−6.379427E−04  2.051198E−04 A20

An equation of the aspheric surfaces of the sixth embodiment is the sameas that of the first embodiment, and the definitions are the same aswell.

The exact parameters of the sixth embodiment based on Table 11 and Table12 are listed in the following table:

Sixth embodiment (Reference wavelength: 555 nm) InRS31 InRS32 HVT31HVT32 |ODT| % |TDT| % 0.17395 0.14969 1.06733 1.32084 1.08812 0.25449|f/f1| |f/f2| |f/f3| |f1/f3| |f1/f2| |f2/f3| 1.30350 1.36818 1.014731.28457 0.95272 1.34831 ΣPPR ΣNPR ΣPPR/|ΣNPR| (TP1 + IN12)/TP2 (TP3 +IN23)/TP2 TP2/ΣTP 2.31823 1.36818 1.69439 1.98672 1.98672 0.15560 ΣPPΣNP f1/ΣPP IN12/f 4.09066 −1.70591  0.43772 0.10018 InTL HOS HOS/HOIInS/HOS InTL/HOS ΣTP/InTL 3.75481 2.42939 1.65556 1.06530 0.647010.89346 |InRS31|/TP3 |InRS32|/TP3 HVT32/HOI HVT32/HOS 0.2693  0.2317 0.58238 0.35177

The results of the equations of the third embodiment based on Table 11and Table 12 are listed in the following table:

Values related to the inflection points of the sixth embodiment HIF1110.5566 HIF111/HOI 0.2454 SGI111 0.0630 |SGI111|/(|SGI111| + TP1) 0.0504HIF211 0.6152 HIF211/HOI 0.2713 SGI211 −0.3185 |SGI211|/(|SGI211| + TP2)0.4853 HIF221 0.6419 HIF221/HOI 0.2830 SGI221 −0.1904|SGI221|/(|SGI221| + TP2) 0.3606 HIF311 0.5698 HIF311/HOI 0.2512 SGI3110.1351 |SGI311|/(|SGI311| + TP3) 0.1730 HIF321 0.7070 HIF321/HOI 0.3117SGI321 0.1430 |SGI321|/(|SGI321| + TP3) 0.1813 (Reference wavelength:555 nm)

It must be pointed out that the embodiments described above are onlysome preferred embodiments of the present invention. All equivalentstructures which employ the concepts disclosed in this specification andthe appended claims should fall within the scope of the presentinvention.

What is claimed is:
 1. An optical image capturing system, in order alongan optical axis from an object side to an image side, comprising: afirst lens having positive refractive power; a second lens havingrefractive power; a third lens having refractive power; and an imageplane; wherein the optical image capturing system consists of the threelenses with refractive power; at least one surface of each of at leasttwo lenses among the lenses has at least an inflection point; the thirdlens has an object-side surface, which faces the object side, and animage-side surface, which faces the image side, and both the object-sidesurface and the image-side surface of the third lens are asphericsurfaces; wherein the optical image capturing system satisfies:1.2≦f/HEP≦6.0; and1.0≦HOS/f≦2.0; where f is a focal length of the optical image capturingsystem HEP is an entrance pupil diameter of the optical image capturingsystem; and HOS is a distance on the optical axis from an object-sidesurface of the first lens to the image plane; wherein the optical imagecapturing system further satisfies:0mm<HIF≦5 mm; where HIF is a distance perpendicular to the optical axisfrom each of the inflection points; wherein the third lens has positiverefractive power; wherein the optical image capturing system comprisesan aperture and satisfies:0.5≦Ins/HOS≦1.1; and0<HIF/HOI≦0.9; where InS is a distance on the optical axis between theaperture and the image plane, and HOI is a half of a diagonal of aneffective sensing area of an image sensor provided on the image plane.2. The optical image capturing system of claim 1, wherein the opticalimage capturing system further satisfies:0 deg<HAF≦70 deg;|TDT|<60%; and|ODT|<50%; where TDT is a TV distortion; ODT is an optical distortion;and HAF is a half of the view angle of the optical image capturingsystem.
 3. The optical image capturing system of claim 1, wherein eachsurface of the third lens has at least an inflection point.
 4. Theoptical image capturing system of claim 1, wherein the optical imagecapturing system further satisfies:0<HIF/InTL≦5; where InTL is a distance between the object-side surfaceof the first lens and the image-side surface of the third lens.
 5. Theoptical image capturing system of claim 1, wherein the optical imagecapturing system further satisfies:0 mm<SGI≦1 mm; where PI is where the optical axis passes each surface ofeach lens among the first lens to the third lens, and SGI is adisplacement in parallel from PI to one of the at least one inflectionpoint on the relevant surface.
 6. The optical image capturing system ofclaim 1, wherein the optical image capturing system further satisfies:0.5InTL/HOS≦9; where InTL is a distance between the object-side surfaceof the first lens and the image-side surface of the third lens.
 7. Anoptical image capturing system, in order along an optical axis from anobject side to an image side, comprising: a first lens having positiverefractive power; a second lens having refractive power, wherein atleast a surface thereof has at least an inflection point; a third lenshaving refractive power, wherein at least a surface thereof has at leastan inflection point; and an image plane; wherein the optical imagecapturing system consists of the three lenses with refractive power; thethird lens has an object-side surface, which faces the object side, andan image-side surface, which faces the image side, and both theobject-side surface and the image-side surface of the third lens areaspheric surfaces; wherein the optical image capturing system satisfies:1.2f/HEP≦6.0;1.0≦HOS/f≦2.0;0.4≦|tan (HAF)≦1.0;|TDT|<60%; and|ODT|<50%; where f is a focal length of the optical image capturingsystem; HEP is an entrance pupil diameter of the optical image capturingsystem; HOS is a distance on the optical axis between an object-sidesurface, which face the object side, of the first lens and the imageplane; TDT is a TV distortion; and ODT is an optical distortion; whereinat least a surface of each of the first lens and the second lensrespectively has at least an inflection point; wherein the object-sidesurface and the image-side surface of the third lens both have at leastan inflection point.
 8. The optical image capturing system of claim 7,wherein the optical image capturing system further satisfies:0 mm<HOS≦4.5 mm.
 9. The optical image capturing system of claim 7,wherein the optical image capturing system further satisfies:0 mm<InTL≦3.0 mm; where InTL is a distance between the object-sidesurface of the first lens and the image-side surface of the third lens.10. The optical image capturing system of claim 7, wherein the opticalimage capturing system further satisfies:2≦(TP1+IN12)/TP2≦10; where TP1 is a central thickness of the first lenson the optical axis; TP2 is a central thickness of the second lens onthe optical axis; and IN12 is a distance on the optical axis between thefirst lens and the second lens.
 11. The optical image capturing systemof claim 7, wherein the optical image capturing system furthersatisfies:1.8≦(TP3+IN23)/TP2≦10; where TP2is a central thickness of the secondlens on the optical axis; TP3 is a central thickness of the third lenson the optical axis; and IN23 is a distance on the optical axis betweenthe second lens and the third lens.
 12. The optical image capturingsystem of claim 7, wherein the optical image capturing system furthersatisfies:0<IN12/f≦0.3; where IN12 is a distance on the optical axis between thefirst lens and the second lens.
 13. The optical image capturing systemof claim 7, wherein the optical image capturing system furthersatisfies:0<|f/f2|≦2; where f2 is a focal length of the second lens.
 14. Theoptical image capturing system of claim 7, wherein the first lens andthe second lens each has at least an inflection point on at least asurface thereof; and the optical image capturing system furthersatisfies:0<|f/f1|≦2;0.4<|f/f2≦1.8; and0<|f/f3|≦3; where f1, f2 and f3 are focal lengths of the first lens tothe third lens, respectively.
 15. An optical image capturing system, inorder along an optical axis from an object side to an image side,comprising: a first lens having positive refractive power, wherein thefirst lens has an object-side surface, which faces the object side, andan image-side surface, which faces the image side, thereof; and an areaof the image-side surface of the first lens, which is close to theoptical axis, is convex; at least a surface between the object-sidesurface and the image-side surface thereof has at least an inflectionpoint; a second lens having negative refractive power, wherein at leastan surface thereof has at least an inflection point; a third lens havingrefractive power, wherein the third lens has at least an inflectionpoint on at least one of an object-side surface, which faces the objectside, and an image-side surface, which faces the image side, thereof;and an image plane; wherein the optical image capturing system consistsof the three lenses having refractive power; and both the object-sidesurface and the image-side surface of the third lens are asphericsurfaces; wherein the optical image capturing system satisfies:1.2≦f/HEP≦3.0;0. 4≦|tan (HAF)|≦1.0;1.0≦HOS/f≦2.0;|TDT|<60%; and|ODT|≦50%; where f is a focal length of the optical image capturingsystem; HEP is an entrance pupil diameter of the optical image capturingsystem; HAF is a half of a view angle of the optical image capturingsystem; HOS is a distance on the optical axis between an object-sidesurface, which face the object side, of the first lens and the imageplane; TDT is a TV distortion; and ODT is an optical distortion; whereinthe third lens has positive refractive power.
 16. The optical imagecapturing system of claim 15, wherein the optical image capturing systemfurther satisfies:0 mm<HIF≦5 mm; where HIF is a distance perpendicular to the optical axisfrom each of the inflection points.
 17. The optical image capturingsystem of claim 16, wherein the optical image capturing system furthersatisfies:2≦(TP1+IN12)/TP2≦10; and1.8≦(TP3+IN23)/TP2≦10; where TP1 is a central thickness of the firstlens on the optical axis; IN12 is a distance on the optical axis betweenthe first lens and the second lens; TP2 is a central thickness of thesecond lens on the optical axis; TP3 is a central thickness of the thirdlens on the optical axis; and IN23 is a distance on the optical axisbetween the second lens and the third lens.
 18. The optical imagecapturing system of claim 15, wherein the optical image capturing systemfurther satisfies:1.5≦ΣPPR/|ΣNPR|≦3.5; where PPR is a ratio of a focal length f of theoptical image capturing system to a focal length fp of each of thelenses with positive refractive power; NPR is a ratio of a focal lengthf of the optical image capturing system to a focal length fn of each oflenses with negative refractive power; ΣPPR is a sum of PPR of all ofthe lenses with positive refractive power; ΣNPR is a sum of NPR of allof the lenses with negative refractive power.
 19. The optical imagecapturing system of claim 18, wherein the optical image capturing systemfurther satisfies:0.45≦ΣTP/InTL≦0.95; where ΣTP is a sum of the thicknesses of all of thelenses with refractive power; ΣTL is a distance on the optical axisbetween the object-side surface of the first lens and the image-sidesurface of the third lens.
 20. The optical image capturing system ofclaim 18, further comprising an aperture and an image sensor on theimage plane, wherein the image sensor image sensor has at least fivemillion pixels; and the optical image capturing system furthersatisfies:0.5≦InS/HOS≦1.1; where InS is a distance on the optical axis between theaperture and the image plane.